content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.operators;
  
  import io.reactivex.common.Disposables;
  import io.reactivex.observable.*;
  import io.reactivex.observable.extensions.ScalarCallable;
  
  /**
   * Signals a constant value.
   *
   * @param <T> the value type
   */
  public final class MaybeJust<T> extends Maybe<T> implements ScalarCallable<T> {
  
      final T value;
  
      public MaybeJust(T value) {
          this.value = value;
      }
  
      @Override
      protected void subscribeActual(MaybeObserver<? super T> observer) {
          observer.onSubscribe(Disposables.disposed());
          observer.onSuccess(value);
      }
  
      @Override
      public T call() {
          return value;
      }
  }
  